You are bidding on Vintage SIGMA XQ Multi-Coated 28MM f2.8 Lens for Pentax K mount. Made in Japan. Lens is in excellent close to mint condition. Comes with Vivitar VMC Skylight 1A filter and front and rear caps. Glass of the lens is clean, clear and free of fungus. Aperture blades are operating and oil free. Lens focuses smoothly. It has lock aperture position. Please see pictures for additional details.